DM9621 datasheet(38/66 Pages) DAVICOM

38 / 66 page

DM9621

USB2.0 to Fast Ethernet Controller

Preliminary

Version: DM9621 -14-DS-P02

February 23, 2011

Force to 0, in application.

PD_value

0,RW

Power down control value

Decision the value of each field Register 13H

1: power down

0: normal

6.13 DSP Control (DSP_CTRL) – 1BH

Bit

Bit Name

Default

Description

15~0

DSP_CTRL

0, RW

DSP CONTROL

For internal testing only

6.14 Power Saving Control Register (PSCR) – 1DH

Bit

Bit Name

Default

Description

15-12

RESERVED

0,RO

RESERVED

PREAMBLEX

0,RW

Preamble Saving Control

when both bit 10and 11 of register 14H are set, the 10BASE-T

transmit preamble count is reduced.

1: 12-bit preamble is reduced.

0: 22-bit preamble is reduced.

AMPLITUDE

0,RW

Transmit Amplitude Control Disabled

1: when cable is unconnected with link partner, the TX amplitude is

reduced for power saving.

0: disable Transmit amplitude reduce function

TX_PWR

0.RW

Transmit Power Saving Control Disabled

1: when cable is unconnected with link partner, the driving current

of transmit is reduced for power saving.

0: disable transmit driving power saving function

8-0

RESERVED

0,RO

RESERVED

DM9621 Fiches technique(PDF) 38 Page - Davicom Semiconductor, Inc.

DM9621 Fiches technique(HTML) 38 Page - Davicom Semiconductor, Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66

Fiches technique Télécharger

Lien URL